Door track

Abstract

A base member and a fascia are assembled to form a hollow door section which is filled with insulative material. Adjacent sections are coupled along respective longitudinal edges for angular and spatial displacement. The base member is extended from a selected plastic with male and female coupling components extending continuously along respective longitudinal edges. A plurality of mounting members projecting from the lateral edges of the sections matingly and slidably engage the semi-cylindrical guide surface of a tract for reciprocal vertical movement of the door. The door may be partially raised for spatial displacement of the sections whereby flow-through ventilation openings are exposed. In a specific embodiment, a flexible drive screw is rotatably carried within the track for powered operation of the door. In alternate embodiments a generally tubular door track is either grasped by a door guide apparatus having a clip, or the guide is slit and a rounded guide rides within the track. A door spring assembly shroud is also provided.

Having fully described and disclosed the instant invention in such clear and concise terms as to enable those skilled in the art to understand and practice the same, the invention claimed is: 
     
       1. A track assembly for affixing a door to a building structure, which door includes an upright lateral edge and which building structure includes an upright wall, and for reciprocal movement of said door along an upright axis, said track assembly comprising: a) a track including i) an elongate tubular upright guide portion, and   ii) mounting means for securing said guide portion to said wall; and     b) a guide member including i) a semi-cylindrical body portion having an opening so that said body portion is clipped onto, and slidably encompasses said guide portion, and   ii) attachment means for securing said body portion to said door.     
     
     
       2. The track assembly of claim 1, wherein: a) said mounting means is generally pedestal-like for supporting said guide portion in spaced relationship to said wall; and   b) said attachment means projects from said body portion to hold said body portion in spaced relationship to said upright lateral edge of said door.   
     
     
       3. The track assembly of claim 1, wherein said attachment means is configured to secure said body portion to said door such that said attachment means allows movement of said body portion along said upright axis, said upright axis being configured substantially perpendicular to said lateral edge of said door. 
     
     
       4. The track assembly of claim 3, wherein said attachment means is further configured to secure said body portion to said door, said attachment means enabling rotation of said body portion about said upright axis of said door. 
     
     
       5. The track assembly of claim 1, further including: a) a guiding surface extending along said guide portion of said track; and   b) a following surface carried by said body portion of said guide member and slidably opposing said guiding surface.   
     
     
       6. The track assembly of claim 5, wherein: a) said guiding surface is carried externally of said guide portion; and   b) said following surface is carried internally of said body portion.   
     
     
       7. The track assembly of claim 6, further including retention means for captively retaining said guide member upon said track. 
     
     
       8. The track assembly of claim 7, wherein: a) said guide portion is generally U-shaped in cross section including i) an intermediate, semi-circular central portion, and   ii) a pair of spaced apart ears extending along said guide portion in opposition to said central portion; and     b) said body portion includes an in-turned U-shaped terminal portion matingly receiving each of said pair of ears.   
     
     
       9. The track assembly of claim 5, further includes biasing means configured to counterbalance the weight of said door and configured to dampen a terminal portion of movement of said door. 
     
     
       10. The track assembly of claim 9, wherein said biasing means includes a tension spring having an end configured to anchor to said door and another end. 
     
     
       11. The track assembly of claim 10, further including: a) a bore extending longitudinally within said track and sized to receive said spring therein; and   b) hanger means carried within said bore for anchoring said end of said spring.   
     
     
       12. The track assembly of claim 11, further including an elongate flexible member extending from the other end of said spring and configured to anchor said tension spring to said door. 
     
     
       13. The track assembly of claim 12, further including: a) a first pulley residing in a location spaced below said spring, and   b) a second pulley residing at an elevated location   said elongate flexible member is configured to extend over each of said pulleys intermediate said spring and door.   
     
     
       14. The track assembly of claim 13, further including: a) a bore extending through said mounting means; and   b) at least a portion of said flexible member intermediate said pulleys extending through said bore.   
     
     
       15. A track assembly for affixing a door to a building structure, which door includes an upright lateral edge and which building structure includes an upright wall, and for reciprocal movement of said door along an upright axis, said track assembly comprising: a) a track including i) an elongate tubular upright guide portion, and   ii) mounting means for securing said guide portion to said wall; and     b) a guide member including i) a C-shaped body portion that is clipped onto, and slidably encompasses said guide portion, and   ii) attachment means for securing said body portion to said door.